.topo
{
	display: block;
	padding-top: 5px;
	border: 1px red solid;
	width: 100%;
	text-align: center;
}
.conteudo
{
	display:block;
	padding-top: 5px;
	border: green 1px solid;
	width: 100%;
	height: 800px;
	text-align: center;
}
.rodape
{
	display:block;
	padding-top: 5px;
	border: blue 1px solid;
	width: 100%;
	text-align: center;
}